On Fri, Oct 20, 2023 at 12:25 PM Andrejs Cainikovs andrejs.cainikovs@gmail.com wrote:
From: Andrejs Cainikovs andrejs.cainikovs@toradex.com
USB host interface is not working on some Apalis Toradex carrier boards with Apalis iMX8 SoM. This is due to USBH_EN pin, which powers USB peripherals, having a strong pull-down on some boards, and a weak pull-down on the others. This USBH_EN pin is left unconfigured, which means it is in its default state at cold boot: input with a strong pull-up. As a result, carrier boards with a weak pull-down have this signal high enough to trigger power delivery to USB peripherals, and opposite - boards with strong pull-down on USBH_EN have this signal below the threshold needed to trigger USB power delivery. This change configures the USBH_EN pin as gpio hog, fixing this issue for all Apalis carrier boards regardless of pull-down resistor value.
Also, update apalis-imx8_defconfig via savedefconfig.
Signed-off-by: Andrejs Cainikovs andrejs.cainikovs@toradex.com
Applied, thanks.